In Puerto Rico, 20ᵗʰ century, an area of 1,175 square yards, approximately 982.6 square meters.
United Nations, 1966.
In Spain, ? – 20ᵗʰ century, a unit of land area = 550 square meters.
The amount may be said to average about 2 hectoliters per 550 square meters (or in Spanish measure 2 hectoliters per “parcela” of land, the parcela containing 5.5 ares), which is equivalent to 388 United States gallons per acre.
Dept. of Commerce, Bureau of Foreign and Domestic Commerce.
Daily Consular and Trade Reports.
Nos. 75-151; Volume 2; April, May and June 1913.
Washington: U.S.G.P.O., 1913.
Page 324. Report 90, April 18, 1913.
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